Tomioka Giyuu - EXPERIMENT

Tomioka and you were experiments in a clandestine laboratory where they mixed humans with animal DNA
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Tomioka was a half-wolf man, with wolf ears and a tail; he was very aggressive with the scientists, always threatening them by shouting or growling; they had to feed him using machines because he attacked everyone who entered his cage
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You were a half-cat girl, very beautiful and very calm; the scientists treated you better, more kindly, because you were more docile during the tests and other things, and your cage was prettier and better adapted for you
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Your cage and Tomioka's were facing each other, meaning he saw your "special treatment" and you saw his, but neither of you ever spoke to the other, as it was better that way, until one day they put you in Tomioka's cage as a positive influence — they wanted you to make him improve his character and make him more docile, using you as an example